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How not to ride a road bike downhill.

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Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

How not to ride a road bike downhill.

Old 06-27-12, 10:07 AM
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vstudio
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How not to ride a road bike downhill.

My buddy here was riding his Dogma 2 and the tires on the rear of his lightweights went out........you gotta be careful going downhill and remember to always wear a helmet

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Old 06-27-12, 10:16 AM
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Wow! He had a great save!
here is one of my buddy riding in fromt of me this past spring in Spain...he did not save it at all...
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Old 06-27-12, 10:17 AM
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It looks like your buddy needs some basic instructions on cornering lines and vision. He doesn't turn smoothly which is generally due to looking at the road in front of his wheel rather than the horizon.
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Old 06-27-12, 10:31 AM
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Wow! That sucks. I guess he freaked out after the first skid. Hope he's ok. How's the wheelset?
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Old 06-27-12, 10:32 AM
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Originally Posted by vstudio View Post
...the tires on the rear of his lightweights went out...
What does that mean exactly? The tire flatted or came off the rim? Were these clinchers or tubies?

He looked like he came out alright, if not slightly bruised. Could've been a lot worse.
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Old 06-27-12, 10:39 AM
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Good thing he was able to scrub off a lot of speed with that first skid and save.
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Old 06-27-12, 10:43 AM
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Originally Posted by himespau View Post
Good thing he was able to scrub off a lot of speed with that first skid and save.
Yeah. Too bad he couldn't keep off that rear brake. Almost had it.

His initial mistake was waving. That's what started the whole thing.
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Old 06-27-12, 10:44 AM
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Originally Posted by ahsposo View Post

His initial mistake was waving. That's what started the whole thing.
That's harsh, man.

I have to say I would have lost it on the first skid most likely.
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Old 06-27-12, 10:47 AM
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Originally Posted by Drag View Post
What does that mean exactly? The tire flatted or came off the rim? Were these clinchers or tubies?
^^I don't understand what happened.
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Old 06-27-12, 10:48 AM
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Where were you guys riding? That road looks familiar.

Hope your friend is OK...exactly what happened to his rear wheel?

(And yes, never a good idea to take your hands off the handlebars to wave while you are going fast downhill on a curving road.)
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Old 06-27-12, 11:03 AM
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This was in Glendora Mountain Road in Glendora, California. This was a small section of one of the stages in the Tour of California. He was using clinchers on his lightweight wheels. the first skid ripped the rear sidewall. Then he had a blowout and when the carbon hit the pavement......it was all over
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Old 06-27-12, 11:06 AM
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So what was going on there -- were you coaching him in how to ride fast down hill? Was he exceeding his abilities b/c he was on camera?

Hope he is OK.
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Old 06-27-12, 11:08 AM
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Originally Posted by ahsposo View Post
Too bad he couldn't keep off that rear brake.
That's what it looks like.

EDIT: Well, nevermind.
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Old 06-27-12, 11:28 AM
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Looks like the back tire went flat and subsequently lost all ability to grip the road. I guess he didnt realize what was going on after the first skid.

EDIT: uh, yeah, what he said ^^^
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Old 06-27-12, 11:29 AM
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The first time you hear the rim on the pavement, you need to stop and see what's going on with the tire. After he recovers from the first skid, he starts pedaling again. He clearly could have and should have stopped.

As for the first skid, I think there's a question whether the tire going flat was cause or effect. Tire losing air can cause the tire to roll over and skid on the rim like that. Either that or it was rear braking causing the skid and the tire was the effect.

Either way, it was a bit dense to keep riding after grinding the rim on the road without taking a look.
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Old 06-27-12, 11:29 AM
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Originally Posted by pallen View Post
Looks like the back tire went flat and subsequently lost all ability to grip the road. I guess he didnt realize what was going on after the first skid.
exactly
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Old 06-27-12, 09:12 PM
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Originally Posted by merlinextraligh View Post
The first time you hear the rim on the pavement, you need to stop and see what's going on with the tire. After he recovers from the first skid, he starts pedaling again. He clearly could have and should have stopped.
Uh...yeah. I noticed the same thing. What was he thinking??
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Old 06-27-12, 09:16 PM
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Originally Posted by merlinextraligh View Post
The first time you hear the rim on the pavement, you need to stop and see what's going on with the tire.
And just to reinforce what may be elusive for some here...

Sound of rim grinding on pavement = BAD.
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Old 06-27-12, 09:21 PM
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no offense... but the guy who crashed (obviously) has to work on his breaking and cornering skills, but props on a decent crash.
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Old 06-27-12, 09:29 PM
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Originally Posted by escarpment View Post
no offense... but the guy who crashed (obviously) has to work on his breaking and cornering skills, but props on a decent crash.
Maybe he was working on his braking and cornering skills. And his waving skills.
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Old 06-27-12, 09:33 PM
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I saw the thread title and assumed you had a tape of me.
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Old 06-28-12, 12:59 PM
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you said "waving skills"
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Old 06-28-12, 02:24 PM
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Honestly, if I have to give that much coaching on line choice from behind, the only thing I would be shouting is slow down. No reason to coach them on the fly, where you can't help them fix their mistakes. He was going much to fast for his skill level.

Guy out kicked his coverage and got lucky on it. Hate to see someone go down, but maybe this will help sort out his poor braking and line choice before the kiss from the pavement is too hard to handle.
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Old 06-28-12, 02:30 PM
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Also, when coaching someone on how to follow a (turning/downhill) line, i think it may be best to have them follow you instead of yelling at them from behind. They then will know exactly where/when to be during the turns by following your line and also have a better gauge of turn entry and exit speeds, as well as safe overall velocity.
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Old 06-28-12, 02:32 PM
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Well as posted on other forums he was in over his head and got himself into trouble by locking is rear wheel in the first place. You should have coached him before the trip down not to grab the rear brake at all.
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